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Finding the Fourth Proportional to 90,480.76, 135,766.41 and 40,596.51

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Solution

The fourth proportional to 90,480.76, 135,766.41 and 40,596.51 is: 60,915.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,480.76 : 135,766.41 = 40,596.51 : x
  2. Step 2: Convert to fraction form
    90,480.76/135,766.41 = 40,596.51/x
  3. Step 3: Cross multiply
    90,480.76x = 135,766.41 × 40,596.51
  4. Step 4: Simplify right side
    90,480.76x = 5,511,642,421.23
  5. Step 5: Solve for x
    x = 5,511,642,421.23/90,480.76
  6. Step 6: Final answer
    x = 60,915.08

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.